Visual FoxPro 应用程序调用 Postgres psqlodbc 驱动程序 9.3.0400 两者都是在 Windows 7 x64 中运行的 32 位应用程序
此调用导致 psqlodbc35w.dll 中出现 Buffer Ovverrun 异常,堆栈跟踪如下。如何解决问题?psqlodbc 是用 C 编写的开源应用程序,可能由 Visual Studio 编译。也许可以在某些情况下对其进行更改,以便不会出现异常?已安装 Visual Studio 2015 社区版。
崩溃后调用 Visual Studio 2015 社区版调试器。它显示堆栈跟踪:
> psqlodbc35w.dll!__crt_debugger_hook() Unknown
psqlodbc35w.dll!__report_gsfailure() Line 315 + 0x7 bytes C
psqlodbc35w.dll!SC_create_errorinfo(const StatementClass_ * self) Line 1423 + 0xa bytes C
psqlodbc35w.dll!PGAPI_StmtError(void * hstmt, short RecNumber, unsigned char * szSqlState, long * pfNativeError, unsigned char * szErrorMsg, short cbErrorMsgMax, short * pcbErrorMsg, unsigned short flag) Line 1612 C
psqlodbc35w.dll!PGAPI_GetDiagField(short HandleType, void * Handle, short RecNumber, short DiagIdentifier, void * DiagInfoPtr, short BufferLength, short * StringLengthPtr) Line 280 C
psqlodbc35w.dll!SQLGetDiagFieldW(short fHandleType, void * handle, short iRecord, short fDiagField, void * rgbDiagInfo, short cbDiagInfoMax, short * pcbDiagInfo) Line 374 + 0x16 bytes C
odbc32(dot)dll!_VFreeErrors(at)4() + 0x401f bytes
odbc32(dot)dll!_SearchStatusCode(at)8() + 0x25 bytes
odbc32(dot)dll!_IsStmtPositioned(at)4() + 0x14 bytes
odbc32(dot)dll!_SQLExecute(at)4() - 0xfd3e bytes
odbc32(dot)dll!_SQLExecDirect(at)12() + 0x77 bytes
vfp9r.dll!0c3904c6()
...
调试窗口显示了很多加载的模块,最后:
...
The thread 'Win32 Thread' (0x2778) has exited with code 0 (0x0).
A buffer overrun has occurred in alguss.EXE which has corrupted the program's internal state. Press Break to debug the program or Continue to terminate the program.
For more details please see Help topic 'How to debug Buffer Overrun Issues'.
也发布在http://www.postgresql.org/message-id/1B88854920C942948F943E26B452E3A4@dell2
更新
这是导致崩溃的 FoxPro 代码。在将查询发送到 Postgres 之前,odbc 驱动程序中发生崩溃。查询中的表不需要存在于数据库中。只需使用 postgres odbc 官方驱动程序运行查询。可能在查询中使用 $ 字符会导致 odbc 崩溃。
SET TEXTMERGE ON
SET TEXTMERGE TO (sys(2015))
TEXT TEXTMERGE NOSHOW
CREATE or replace FUNCTION public.f_infA()
RETURNS TABLE (
kuupaev date,
nimi text,
tasudok text,
regnr text,
kmprotsent text,
neto numeric,
myyk numeric,
erisus01 bool,
erisus02 bool,
erisus03 bool
) AS $f_InfA$
WITH
myyk as (
SELECT
dok.kuupaev,
dok.tasudok,
klient.regnr,
CASE when klient.regnr is null OR klient.regnr='' then klient.nimi else '' end::char(80) as nimi,
20 as kmprotsent,
k01+k011+k01erik as myyk20,
0 as myyk9,
MAX(klient.nimi)::char(80) as maxnimi,
bool_or(k01erik<>0) as erisus01,
bool_or(d09<>0) as erisus02,
SUM( ROUND( rid.hind * case when rid.kogus<>0 then rid.kogus else 1 end*
CASE when rid.kogpak<>0 then rid.kogpak else 1 end
/case when dok.doktyyp<>'Y' then 1 else 1+myygikoo.kmprotsent/100 end *
CASE when dok.raha=prpalk.pohiraha then 1
when dok.exchrate<>0 then dok.Exchrate else kurss.kurss end,2)
) as neto
FROM prpalk, tehing
JOIN dok ON tehing.dokumnr=dok.dokumnr
JOIN rid ON dok.dokumnr=rid.dokumnr
JOIN klient ON dok.klient=klient.kood
LEFT JOIN myygikoo ON rid.myygikood=myygikoo.myygikood or ( rid.myygikood is null and myygikoo.myygikood ='' )
LEFT JOIN kurss ON dok.raha=kurss.raha AND dok.kuupaev=kurss.kuupaev
LEFT JOIN toode ON rid.toode=toode.toode
WHERE (rid.toode is null or toode.grupp<>'S' OR rid.toode='LE' or (toode.klass like '%T%' AND toode.klass not like '%E%'
AND toode.klass not like '%M%')) and
tehing.alusdok='LG' AND ( (k01+k011+k01erik)<>0 )
AND klient.nimi not ilike '%AUDIITORBÜROO%'
AND klient.nimi not ilike '%ADVOKAADIBÜROO%'
AND klient.nimi not ilike 'Notar %'
AND klient.nimi not ilike '% Notar'
AND rid.hind <> 0 -- Et ei tekiks arvetel taara 0 hinnaga väljastamisel erisuse koodi 03
AND klient.nimi not ilike 'Eraisik'
AND klient.nimi not ilike 'Jaeostja'
and not klient.kmdkeeld
GROUP BY 1,2,3,4,5,6,7
union all
SELECT
dok.kuupaev,
dok.tasudok,
klient.regnr,
CASE when klient.regnr is null OR klient.regnr='' then klient.nimi else '' end::char(80) as nimi,
9,
0 as myyk20,
k02+k021 as myyk9,
MAX(klient.nimi)::char(80) as maxnimi,
bool_or(k01erik<>0) as erisus01,
bool_or(d09<>0) as erisus02,
SUM( ROUND( rid.hind * case when rid.kogus<>0 then rid.kogus else 1 end*
CASE when rid.kogpak<>0 then rid.kogpak else 1 end
/case when dok.doktyyp<>'Y' then 1 else 1+myygikoo.kmprotsent/100 end *
CASE when dok.raha=prpalk.pohiraha then 1
when dok.exchrate<>0 then dok.Exchrate else kurss.kurss end,2)
) as neto
FROM prpalk, tehing
JOIN dok ON tehing.dokumnr=dok.dokumnr
JOIN rid ON dok.dokumnr=rid.dokumnr
JOIN klient ON dok.klient=klient.kood
LEFT JOIN myygikoo ON rid.myygikood=myygikoo.myygikood or ( rid.myygikood is null and myygikoo.myygikood ='' )
LEFT JOIN kurss ON dok.raha=kurss.raha AND dok.kuupaev=kurss.kuupaev
LEFT JOIN toode ON rid.toode=toode.toode
WHERE (rid.toode is null or toode.grupp<>'S' OR rid.toode='LE' or (toode.klass like '%T%' AND toode.klass not like '%E%'
AND toode.klass not like '%M%')) and
tehing.alusdok='LG' AND (k02+k021)<>0
AND klient.nimi not ilike '%AUDIITORBÜROO%'
AND klient.nimi not ilike '%ADVOKAADIBÜROO%'
AND klient.nimi not ilike 'Notar %'
AND klient.nimi not ilike '% Notar'
AND rid.hind <> 0 -- Et ei tekiks arvetel taara 0 hinnaga väljastamisel erisuse koodi 03
AND klient.nimi not ilike 'Eraisik'
AND klient.nimi not ilike 'Jaeostja'
and not klient.kmdkeeld
GROUP BY 1,2,3,4,5,6,7
union all
SELECT
omrid.adkuupaev,
omrid.ettemarve,
klient.regnr,
CASE when klient.regnr is null OR klient.regnr='' then klient.nimi else '' end::char(80) as nimi,
CASE when sum(k01+k011+k01erik)<>0 then 20 else 9 end,
CASE when sum(k01+k01erik+k011)<>0 then
sum( ROUND(
case when omrid.hinnalis='LM' then -omrid.tasusumma else omrid.tasusumma end *
case when omrid.kogus<>0 then omrid.kogus else 1 end *
case when omrid.raha=prpalk.pohiraha then 1 else
case when omrid.exchrate<>0 then omrid.Exchrate else kurss.kurss end END,2))
else 0 end as myyk20,
CASE when sum(k02+k021)<>0 then
sum( ROUND(
case when omrid.hinnalis='LM' then -omrid.tasusumma else omrid.tasusumma end *
case when omrid.kogus<>0 then omrid.kogus else 1 end *
case when omrid.raha=prpalk.pohiraha then 1 else
case when omrid.exchrate<>0 then omrid.Exchrate else kurss.kurss end END,2))
else 0 end as myyk9,
MAX(klient.nimi)::char(80) as maxnimi,
bool_or(k01erik<>0) as erisus01,
bool_or(d09<>0) as erisus02,
SUM( ROUND(
case when omrid.hinnalis='LM' then -omrid.tasusumma else omrid.tasusumma end *
case when omrid.kogus<>0 then omrid.kogus else 1 end *
case when omrid.raha=prpalk.pohiraha then 1 else
case when omrid.exchrate<>0 then omrid.Exchrate else kurss.kurss end END,2)) as neto
FROM prpalk, tehing
join omdok on tehing.dokumnr=omdok.dokumnr
JOIN omrid ON omrid.dokumnr=tehing.dokumnr -- AND tehing.doknr=omrid.ettemarve
JOIN klient ON omdok.klient=klient.kood
LEFT JOIN kurss ON omrid.raha=kurss.raha AND omrid.adkuupaev=kurss.kuupaev
WHERE tehing.alusdok in ('DT', 'DI') AND ( (k01+k01erik+ k011)>0 )
and omrid.ettemarve is not null and omrid.ettemarve is distinct from ''
AND klient.nimi not ilike '%AUDIITORBÜROO%'
AND klient.nimi not ilike '%ADVOKAADIBÜROO%'
AND klient.nimi not ilike 'Notar %'
AND klient.nimi not ilike '% Notar'
and not klient.kmdkeeld
GROUP BY 1,2,3,4
),
myyk1000 as (
SELECT
regnr,
nimi
FROM myyk
WHERE neto>0
GROUP BY 1,2
HAVING SUM(neto)>1000
)
SELECT
myyk.kuupaev,
myyk.maxnimi as nimi,
myyk.tasudok,
myyk.regnr,
'20' as kmprotsent,
round( SUM(myyk.neto),2) as neto,
round( SUM(myyk.myyk20),2) as myyk,
bool_or(erisus01) as erisus01,
bool_or(erisus02) as erisus02,
bool_or(myyk.kmprotsent=0) as erisus03
FROM myyk1000
JOIN myyk ON myyk1000.regnr=myyk.regnr AND myyk1000.nimi=myyk.nimi
GROUP BY 1,2,3,4
HAVING SUM(myyk.myyk20)<>0
UNION ALL
SELECT
myyk.kuupaev,
myyk.maxnimi as nimi,
myyk.tasudok,
myyk.regnr,
'9',
round( SUM(myyk.neto),2) ,
round( SUM(myyk.myyk9),2),
false,
bool_or(erisus02) as erisus02,
bool_or(myyk.kmprotsent=0) as erisus03
FROM myyk1000
JOIN myyk ON myyk1000.regnr=myyk.regnr AND myyk1000.nimi=myyk.nimi
GROUP BY 1,2,3,4
HAVING SUM(myyk.myyk9)<>0
UNION ALL
SELECT
myyk.kuupaev,
myyk.maxnimi as nimi,
myyk.tasudok,
myyk.regnr,
'erisus20',
round( SUM(myyk.neto),2) ,
round( SUM(myyk.myyk9),2),
false,
bool_or(erisus02) as erisus02,
false as erisus03
FROM myyk1000
JOIN myyk ON myyk1000.regnr=myyk.regnr AND myyk1000.nimi=myyk.nimi
GROUP BY 1,2,3,4
HAVING bool_or(erisus02)
ORDER BY nimi, kuupaev, tasudok
$f_infa$ LANGUAGE sql STABLE;
RESET ROLE;
ENDTEXT
cSqlFail = SET('textmerge',2)
SET TEXTMERGE TO
SQLEXEC(m.g_server.nConnhandle, FILETOSTR(m.cSqlFail) )
使用的连接字符串:
cConnString = "DRIVER={PostgreSQL Unicode};"+ ;
"DATABASE=test";"+ ;
"SERVER=localhost;" + ;
"PORT=5432;" + ;
"UID=user;" + ;
"Protocol=-0;" + ;
"B9=0"+ ;
";SSLMODE=allow"